Today Nikon issued a new service advisory for the Nikon D750 camera involving possible image shading from shutter. You can check if your camera’s serial number is affected here (updated: here is the link the US page). Additional information:

Nikon Japan reported an issue with the new Nikon DF-N1000 electronic viewfinder ($328.95): when attached to the Nikon 1 V3 camera, removing the EVF could be difficult. The affected products have serial numbers below 11003000:

Nikon issued a service advisory for the Coolpix L23 compact camera warning that it may overheat causing the top cover to become deformed. This is the first official service advisory after Nikon’s Image Authentication System got cracked and D5000’s power issue. The full details: